[单选题] ____ is power supplied by main switchboard directly not through sub-board.

1、[单选题]According to Anneal I of MARPOL 73/78, the discharging oil content of the machinery space bilges must be lower than .

• A、30 liters per nautical mile
• B、 15 liters per nautical mile
• C、 30 ppm
• D、 15ppm

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2、[单选题]According to Annex IV of comminuted and disinfected sewage using an approved system can be discharged when the ship is more than away from the nearest land.

• A、3 n mile
• B、 5 n mile
• C、 12 n mile
• D、 25 n mile

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3、[单选题]According to Annex I of MARPOL 73/78, the instantaneous discharging rate of the oily waste from cargo tanks of oil tankers must be lower than .

• A、30 liters per nautical mile
• B、 15 liters per nautical mile
• C、 30 ppm
• D、 15ppm

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4、[单选题]Which of the following is false? .

• A、A company should develop a SMS and implement it
• B、 A company implementing a SMS properly may obtain a DOC
• C、 Once a company obtains its DOC, each vessel of this company will obtain a SMC
• D、 DOC is valid for 60 months unless “major non-conformity” is found

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5、[单选题]The main objective of the SOLAS Convention is .

• A、to provide a solution of lowering pollution at sea
• B、 to specify minimum standards for the members composing the watch at sea
• C、 to specify minimum standards for ships considering their safety
• D、 to tell the company how to go about running their business

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